Accessing Real time of system and taking difference from current time???

Questions & Answers
1

I have to refill the energy after some minutes. If the user close the game and come back then the remaining time should be calculated and the 1 energy should be filled. Can anyone help ???

2

I suppose you could use playerprefs to keep the time saved.

Here is an example, its pseudo untested code but you might get the idea how to tackle this.

// Check if we already have a date set
var unParsedTime = PlayerPrefs.GetString("systemTime");
if (string.IsNullOrEmpty(unParsedTime))
{
    unParsedTime = DateTime.Now.ToString();
    PlayerPrefs.SetString("systemTime", unParsedTime);
    PlayerPrefs.Save();
}

var lastTime = DateTime.Parse(unParsedTime);
TimeSpan span = DateTime.Now.Subtract(lastTime);
if (span.TotalMinutes >= 2) // After 2 minutes
{
    // Do your business

    // Update the system time to now
    PlayerPrefs.SetString("systemTime", DateTime.Now.ToString());
    PlayerPrefs.Save();
}